of course you can write a script that displays the interesting data in a loop (e.g. every few seconds), and when you start that from the terminal you can look at it.
you can even maintain some derived values in the script and display them as well, like average, average over last minute, lowest, highest, whatever.
it is also possible to call a script from SNMP. you can then graph it on another system with the wellknown graphing tools that work over SNMP.
I think it would be a nice addition to allow adding of a graph rule that is bound to a script, and that graphs the output of that script. I have proposed it before.
(it could e.g. be used to graph temperature, voltage, number of routes, etc)
But is it possible to display information in the terminal as on the screen?
https://itgap.ru/static/uploads/posts/2 ... 18ab06.jpg
I could not figure out how to insert an image here, so I inserted a link to the first screenshot of the "htop" command that came across. The picture above shows the CPU and memory usage.